/*
  Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.

  The MySQL Connector/C++ is licensed under the terms of the GPLv2
  <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most
  MySQL Connectors. There are special exceptions to the terms and
  conditions of the GPLv2 as it is applied to this software, see the
  FLOSS License Exception
  <http://www.mysql.com/about/legal/licensing/foss-exception.html>.

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published
  by the Free Software Foundation; version 2 of the License.

  This program is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  for more details.

  You should have received a copy of the GNU General Public License along
  with this program; if not, write to the Free Software Foundation, Inc.,
  51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
*/

#ifndef _MYSQL_DEBUG_H_
#define _MYSQL_DEBUG_H_

#include <boost/shared_ptr.hpp>

/* _MSC_VER VC6.0=1200, VC7.0=1300, VC7.1=1310, VC8.0=1400 */
#if defined(_MSC_VER)
#if _MSC_VER >=1400
#define WE_HAVE_VARARGS_MACRO_SUPPORT
#endif
#else
#define WE_HAVE_VARARGS_MACRO_SUPPORT
#endif



#if defined(WE_HAVE_VARARGS_MACRO_SUPPORT) && (CPPCONN_TRACE_ENABLED || defined(SAL_DLLPRIVATE))
#define CPP_ENTER(msg)			const boost::shared_ptr< MySQL_DebugLogger > __l = this->logger;(void)__l;\
									MySQL_DebugEnterEvent __this_func(__LINE__, __FILE__, msg, this->logger)
#define CPP_ENTER_WL(l, msg)	const boost::shared_ptr< MySQL_DebugLogger > __l = (l);(void)__l;\
									MySQL_DebugEnterEvent __this_func(__LINE__, __FILE__, msg, (l))
#define CPP_INFO(msg)		{if (__l) __l->log("INF", msg); }
#define CPP_INFO_FMT(...)	{if (__l) __l->log_va("INF", __VA_ARGS__); }
#define CPP_ERR(msg)		{if (__l) __l->log("ERR", msg); }
#define CPP_ERR_FMT(...)	{if (__l) __l->log_va("ERR", __VA_ARGS__); }
#else
#define CPP_ENTER(msg)
#define CPP_ENTER_WL(l, msg)
#define CPP_INFO(msg)
#define CPP_ERR(msg)
#define CPP_ENTER_WL(l, msg)
static inline void CPP_INFO_FMT(...) {}
static inline void CPP_ERR_FMT(...) {}
#endif

#include <stack>
#include "mysql_util.h"

namespace sql
{
    namespace mysql
    {

        class MySQL_DebugEnterEvent;


        class MySQL_DebugLogger
        {
            std::stack< const MySQL_DebugEnterEvent* > callStack;
            int tracing;
            enum {
                NO_TRACE,
                NORMAL_TRACE
            };
        public:
            MySQL_DebugLogger();
            virtual ~MySQL_DebugLogger();

            void disableTracing();

            void enableTracing();

            void enter(const MySQL_DebugEnterEvent* obj);

            bool isTracing();

            void leave(const MySQL_DebugEnterEvent* obj);

            void log(const char* const type, const char* const message);

            void log_va(const char* const type, const char* const format, ...);

        private:
            /* Prevent use of these */
            MySQL_DebugLogger(const MySQL_DebugLogger&);
            void operator=(MySQL_DebugLogger&);
        };


        class MySQL_DebugEnterEvent
        {
        public:
            unsigned int line;
            const char* const file;
            const char* const func;
            const boost::shared_ptr< MySQL_DebugLogger > logger;

            MySQL_DebugEnterEvent(unsigned int l, const char* const f, const char* const func_name, const boost::shared_ptr< MySQL_DebugLogger > & logger_object);
            ~MySQL_DebugEnterEvent();
        };

    } /* namespace mysql */
} /* namespace sql */

#endif /* _MYSQL_DEBUG_H_ */

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
 * vim600: noet sw=4 ts=4 fdm=marker
 * vim<600: noet sw=4 ts=4
 */
